Problem A
House of Cards — Problem Statistics

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Submissions	2427
Accepted submissions	859
Submission ratio	35.39%
Authors	818
Accepted authors	685
Author ratio	83.74%

#	User	Runtime	Language	Date
1	Chenzhang Hu	0.06 s	Bash	2023-09-18 18:15:06
2	Thomas Feld	0.06 s	Bash	2023-09-27 09:35:22

#	User	Runtime	Language	Date
1	Hidden user	0.02 s	C#	2017-10-01 21:05:59
2	ck67	0.02 s	C#	2017-11-19 14:26:39
3	Emiel Duys	0.02 s	C#	2018-03-10 23:51:03

#	User	Runtime	Language	Date
1	Steven Cheng	0.08 s	Go	2020-06-03 19:12:43
2	Norbert Voelker	0.08 s	Go	2021-11-28 23:06:13

#	User	Runtime	Language	Date
1	Joakim Blikstad	0.00 s	Haskell	2017-06-11 10:09:12
2	David Wärn	0.00 s	Haskell	2017-06-11 10:29:13
3	Brent Yorgey	0.00 s	Haskell	2017-09-30 00:04:03
4	Birk Tjelmeland	0.00 s	Haskell	2017-12-13 09:43:29
5	Olle Eriksson	0.00 s	Haskell	2018-03-06 17:52:21
6	Morten Clausen	0.01 s	Haskell	2018-12-27 18:00:47

#	User	Runtime	Language	Date
1	Taras Romanyuk	0.04 s	Java	2025-01-29 20:57:49
2	Martijn Muijsers	0.05 s	Java	2017-09-22 12:25:04
3	Måns Magnusson	0.06 s	Java	2017-06-11 10:43:27
4	Andreas Wassum	0.06 s	Java	2017-06-11 16:48:29
5	Samuel Klingström	0.06 s	Java	2017-06-12 23:20:11
6	Hidden user	0.06 s	Java	2017-06-13 19:53:47
7	Micah Stairs	0.06 s	Java	2017-06-14 05:09:59
8	Hamza Hasbi	0.06 s	Java	2017-08-14 22:37:42
9	Erik Baalhuis	0.06 s	Java	2017-08-27 17:52:18
10	David Brink	0.06 s	Java	2017-09-26 19:21:31

#	User	Runtime	Language	Date
1	Stephanie Keck	0.42 s	JavaScript (Node.js)	2020-03-11 04:00:56

#	User	Runtime	Language	Date
1	Christian Cederquist	0.02 s	JavaScript (SpiderMonkey)	2023-01-31 20:01:21
2	Zach Tschetter	0.02 s	JavaScript (SpiderMonkey)	2023-07-07 04:32:01
3	Bjørn Chr. Soltvedt	0.02 s	JavaScript (SpiderMonkey)	2024-06-28 13:44:30

#	User	Runtime	Language	Date
1	Слава Гуляев	0.14 s	Kotlin	2017-11-08 16:54:06
2	Hidden user	0.17 s	Kotlin	2017-12-11 07:46:10
3	Adam Rankin	0.17 s	Kotlin	2023-05-13 19:18:36
4	Phường Lên	0.18 s	Kotlin	2019-10-28 15:28:56
5	Chris Johnson	0.23 s	Kotlin	2025-03-21 00:58:49

#	User	Runtime	Language	Date
1	Antti Laaksonen	0.02 s	Python 2	2017-06-11 10:30:50
2	Ali Ahmadi	0.02 s	Python 2	2017-06-11 10:32:52
3	Felipe Mota	0.02 s	Python 2	2017-06-11 11:20:36
4	Saad Taame	0.02 s	Python 2	2017-06-11 11:36:32
5	Soumya Dubey	0.02 s	Python 2	2017-06-11 12:00:36
6	Bjarki Ágúst Guðmundsson	0.02 s	Python 2	2017-06-11 13:46:45
7	Nick Wu	0.02 s	Python 2	2017-06-16 02:32:56
8	Hrant Hovhannisyan	0.02 s	Python 2	2017-06-17 09:11:44
9	Rares Cristian	0.02 s	Python 2	2017-06-19 05:40:42
10	Daniel Moyer	0.02 s	Python 2	2017-09-30 19:28:51

#	User	Runtime	Language	Date
1	Aron Granberg	0.02 s	Python 3	2017-06-11 10:16:33
2	Samuel Zackrisson	0.02 s	Python 3	2017-06-11 10:17:01
3	Simon Lindholm	0.02 s	Python 3	2017-06-11 10:18:31
4	Nils Gustafsson	0.02 s	Python 3	2017-06-11 10:23:02
5	Johan Sannemo	0.02 s	Python 3	2017-06-11 10:23:41
6	Mikhail Piklyaev	0.02 s	Python 3	2017-06-11 10:26:46
7	Fredrik Hernqvist	0.02 s	Python 3	2017-06-11 10:28:24
8	Anton Grensjö	0.02 s	Python 3	2017-06-11 10:28:24
9	Дима Евстафеев	0.02 s	Python 3	2017-06-11 10:30:36
10	Marcus Dicander	0.02 s	Python 3	2017-06-11 10:32:14

#	User	Runtime	Language	Date
1	Mehdi Maick	0.03 s	Ruby	2017-06-11 16:22:43
2	Mouad Naciri	0.03 s	Ruby	2017-08-14 02:17:53
3	Hidden user	0.05 s	Ruby	2020-08-17 04:06:27
4	Thomas Feld	0.06 s	Ruby	2022-12-07 14:48:59
5	Gustav Elmqvist	0.06 s	Ruby	2023-02-18 00:55:55
6	Chenzhang Hu	0.06 s	Ruby	2023-10-28 17:34:40

#	User	Runtime	Language	Date
1	Bas Dirks	0.00 s	Rust	2022-06-27 09:22:18

#	User	Length	Language	Date
1	Chenzhang Hu	5	Bash	2024-02-03 12:35:56
2	Thomas Feld	13	Bash	2023-09-27 09:35:49

#	User	Length	Language	Date
1	Sambit Palit	1086	C	2020-12-01 04:16:53
2	Samuel Nzembele	1282	C	2019-05-04 15:20:19
3	Farhad Cader	1282	C	2024-06-10 09:21:30
4	Jón Steinn Elíasson	1329	C	2017-06-15 23:01:23
5	Danni	1335	C	2018-02-21 00:54:51
6	William Chen	1335	C	2019-05-01 06:05:28
7	Hidden user	1335	C	2021-10-03 18:17:35
8	MALCOM VIJAY JOSEPHRAJ D	1335	C	2022-05-28 09:21:23
9	Aymane Laaroui	1335	C	2023-06-24 04:41:20
10	Quân Anh	2147	C	2024-04-01 21:28:05

#	User	Length	Language	Date
1	Hidden user	643	C#	2017-10-01 21:05:59
2	Emiel Duys	1054	C#	2018-03-10 23:51:03
3	ck67	1953	C#	2017-11-19 14:26:39

#	User	Length	Language	Date
1	Kevin Lee	436	C++	2017-06-11 11:11:17
2	Ngọc Long	576	C++	2017-11-14 13:00:53
3	Tuukka Korhonen	604	C++	2017-06-11 10:16:45
4	Yao Wang	605	C++	2019-10-15 02:56:15
5	Matthew Tran	606	C++	2020-02-28 23:02:25
6	Rene Josiah M. Quinto	610	C++	2018-04-21 07:35:06
7	Antonio Carzaniga	616	C++	2023-05-11 21:26:14
8	Rifle Zhang	640	C++	2017-09-30 20:24:54
9	Nikolaj Simling	677	C++	2017-09-30 20:32:57
10	Paul Jungeblut	693	C++	2017-06-16 10:15:15

#	User	Length	Language	Date
1	Steven Cheng	642	Go	2020-06-03 19:12:43
2	Norbert Voelker	737	Go	2021-11-28 23:06:13

#	User	Length	Language	Date
1	Joakim Blikstad	107	Haskell	2017-06-11 10:09:12
2	Birk Tjelmeland	130	Haskell	2017-12-13 09:43:29
3	David Wärn	173	Haskell	2017-06-11 10:29:13
4	Brent Yorgey	207	Haskell	2017-09-30 00:04:03
5	Morten Clausen	284	Haskell	2018-12-27 18:04:19
6	Olle Eriksson	334	Haskell	2018-03-06 17:52:21

#	User	Length	Language	Date
1	Evan Magill	289	Java	2023-09-14 16:16:29
2	Way Tan	395	Java	2018-12-11 13:34:58
3	Michael Earl	402	Java	2017-10-28 01:28:26
4	Ahmad Hamadneh	419	Java	2020-06-13 00:32:12
5	Micah Stairs	465	Java	2017-06-14 05:11:17
6	Timothy White	465	Java	2019-10-12 16:39:06
7	Jiru Xu	469	Java	2017-11-02 01:44:11
8	Doug Goodman	520	Java	2017-12-22 15:26:58
9	Cory Austin	542	Java	2021-02-18 00:00:27
10	Ignacio Castellano Vega	551	Java	2022-12-08 12:03:27

#	User	Length	Language	Date
1	Stephanie Keck	9179	JavaScript (Node.js)	2020-03-11 04:00:56

#	User	Length	Language	Date
1	Bjørn Chr. Soltvedt	99	JavaScript (SpiderMonkey)	2024-06-28 13:44:30
2	Christian Cederquist	128	JavaScript (SpiderMonkey)	2023-01-31 20:01:21
3	Zach Tschetter	150	JavaScript (SpiderMonkey)	2023-07-07 04:32:01

#	User	Length	Language	Date
1	Adam Rankin	321	Kotlin	2023-05-13 19:18:36
2	Chris Johnson	381	Kotlin	2025-03-21 00:58:49
3	Hidden user	419	Kotlin	2017-12-11 07:46:10
4	Phường Lên	499	Kotlin	2019-10-28 15:28:56
5	Слава Гуляев	959	Kotlin	2017-11-08 16:54:06

#	User	Length	Language	Date
1	Sean Malloy	51	Python 2	2023-09-13 00:08:18
2	Dmitry Lyubshin	54	Python 2	2018-02-24 20:35:15
3	Nick Wu	62	Python 2	2017-06-16 02:32:56
4	Evan Magill	64	Python 2	2023-09-13 03:01:02
5	Ali Ahmadi	66	Python 2	2017-06-11 10:32:52
6	Hrant Hovhannisyan	68	Python 2	2017-06-17 09:11:44
7	Bjarki Ágúst Guðmundsson	72	Python 2	2017-06-11 13:46:45
8	Mees de Vries	72	Python 2	2017-11-07 13:10:12
9	AMHAOUCH Younes	77	Python 2	2019-09-15 11:34:18
10	Benjamin Qi	85	Python 2	2017-10-12 23:48:23

#	User	Length	Language	Date
1	Błażej Dariusz Roszkowski	40	Python 3	2022-10-26 00:12:29
2	Marshall D Feng	40	Python 3	2023-09-13 07:47:35
3	Lee Isaac	41	Python 3	2022-11-08 16:14:31
4	Alexandre Charland	41	Python 3	2025-03-19 17:12:00
5	Guk Yi Siong	42	Python 3	2022-11-16 04:26:29
6	Tam Keng Hong	42	Python 3	2023-01-05 07:45:37
7	Lee Yi Heng	42	Python 3	2024-03-15 19:48:26
8	Felix Beaudoin	43	Python 3	2025-03-19 16:29:57
9	Hidden user	46	Python 3	2022-10-26 20:41:48
10	Peter Stauder	46	Python 3	2023-03-25 08:52:52

#	User	Length	Language	Date
1	Chenzhang Hu	23	Ruby	2023-10-28 17:34:40
2	Thomas Feld	30	Ruby	2022-12-07 14:48:59
3	Gustav Elmqvist	41	Ruby	2023-02-18 02:21:23
4	Hidden user	80	Ruby	2020-08-17 04:06:27
5	Mouad Naciri	96	Ruby	2017-08-14 02:17:53
6	Mehdi Maick	142	Ruby	2017-06-11 16:22:43

#	User	Length	Language	Date
1	Bas Dirks	5244	Rust	2022-06-27 09:22:18

Solution running time distribution